Details
| Original language | English |
|---|---|
| Pages (from-to) | 1687-1698 |
| Number of pages | 12 |
| Journal | International Journal of Advanced Manufacturing Technology |
| Volume | 101 |
| Issue number | 5-8 |
| Early online date | 23 Nov 2018 |
| Publication status | Published - 6 Apr 2019 |
Abstract
Polycrystalline cubic boron nitride (PCBN) is widely used in industry as a cutting tool material for the machining of hardened steels, cast, or nickel-based super alloys. For the generation of geometrical features of such tools, laser ablation is a novel and promising technology, which offers wear-free processing, high automation potential, and geometrical flexibility. In this study, the ablation mechanism is experimentally investigated for a wide range of laser pulse durations (fs-ns regime) and laser-induced effects on the surface properties are presented. It could be shown by using Raman spectroscopy that laser-induced transformations of cubic boron nitride to the hexagonal lattice structure (hBN) or boron oxide (B 2 O 3 ) are strongly determined by the single pulse and areal fluence of the laser source. Furthermore, a pulse duration of few picoseconds or below reduces the thermally induced phase transformations. Moreover, it was shown that the use of ns-laser leads to significant melting and recrystallization processes of the binder material, which reduces surface hardness. This mechanism was not found for the use of fs- and ps-laser sources.
Keywords
- Cutting tools, PCBN, Pulsed laser ablation, Surface integrity
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Computer Science(all)
- Software
- Engineering(all)
- Mechanical Engineering
- Computer Science(all)
- Computer Science Applications
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: International Journal of Advanced Manufacturing Technology, Vol. 101, No. 5-8, 06.04.2019, p. 1687-1698.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of pulsed laser ablation on the surface integrity of PCBN cutting tool materials
AU - Denkena, Berend
AU - Krödel, Alexander
AU - Grove, Thilo
N1 - Funding Information: The authors thank the German Research Foundation (DFG) for the financial support within the project “KO 4293/6-1.” Moreover, the authors thank DMG MORI for supporting the experimental investigations.
PY - 2019/4/6
Y1 - 2019/4/6
N2 - Polycrystalline cubic boron nitride (PCBN) is widely used in industry as a cutting tool material for the machining of hardened steels, cast, or nickel-based super alloys. For the generation of geometrical features of such tools, laser ablation is a novel and promising technology, which offers wear-free processing, high automation potential, and geometrical flexibility. In this study, the ablation mechanism is experimentally investigated for a wide range of laser pulse durations (fs-ns regime) and laser-induced effects on the surface properties are presented. It could be shown by using Raman spectroscopy that laser-induced transformations of cubic boron nitride to the hexagonal lattice structure (hBN) or boron oxide (B 2 O 3 ) are strongly determined by the single pulse and areal fluence of the laser source. Furthermore, a pulse duration of few picoseconds or below reduces the thermally induced phase transformations. Moreover, it was shown that the use of ns-laser leads to significant melting and recrystallization processes of the binder material, which reduces surface hardness. This mechanism was not found for the use of fs- and ps-laser sources.
AB - Polycrystalline cubic boron nitride (PCBN) is widely used in industry as a cutting tool material for the machining of hardened steels, cast, or nickel-based super alloys. For the generation of geometrical features of such tools, laser ablation is a novel and promising technology, which offers wear-free processing, high automation potential, and geometrical flexibility. In this study, the ablation mechanism is experimentally investigated for a wide range of laser pulse durations (fs-ns regime) and laser-induced effects on the surface properties are presented. It could be shown by using Raman spectroscopy that laser-induced transformations of cubic boron nitride to the hexagonal lattice structure (hBN) or boron oxide (B 2 O 3 ) are strongly determined by the single pulse and areal fluence of the laser source. Furthermore, a pulse duration of few picoseconds or below reduces the thermally induced phase transformations. Moreover, it was shown that the use of ns-laser leads to significant melting and recrystallization processes of the binder material, which reduces surface hardness. This mechanism was not found for the use of fs- and ps-laser sources.
KW - Cutting tools
KW - PCBN
KW - Pulsed laser ablation
KW - Surface integrity
UR - http://www.scopus.com/inward/record.url?scp=85057189241&partnerID=8YFLogxK
U2 - 10.1007/s00170-018-3032-4
DO - 10.1007/s00170-018-3032-4
M3 - Article
AN - SCOPUS:85057189241
VL - 101
SP - 1687
EP - 1698
JO - International Journal of Advanced Manufacturing Technology
JF - International Journal of Advanced Manufacturing Technology
SN - 0268-3768
IS - 5-8
ER -